ItemNO:
489-P1-HI-A20-E-HPayment:
T/TProductOrigin:
United StatesLeadTime：
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+86 18030235313Configured Generator Management Relay · Multilin 489 Generator Protection System
The Multilin 489 integrates generator protection, monitoring, metering and event information for 25, 50 or 60 Hz installations. GE documents functions including stator differential, stator ground, negative-sequence, loss-of-excitation, overexcitation, reverse-power and thermal monitoring.
The order string is fully decoded from the official brochure. It is especially important not to describe this E-display unit as the T Ethernet version: the T option is the enhanced front panel with 10BaseT Ethernet.
| Manufacturer | GE Vernova Multilin |
|---|---|
| Exact model | 489-P1-HI-A20-E-H |
| Application | Protection and management of small- to medium-sized synchronous or induction generators |
| P1 option | 1 A phase CT secondaries |
| HI option | 90–300 V DC or 70–265 V AC, 48–62 Hz control power |
| A20 option | 4–20 mA analog-output range |
| E option | Enhanced display with larger LCD and improved keypad |
| H option | Harsh chemical environment conformal coating |
| Temperature inputs | 12 RTD inputs |
| Communications for E configuration | Serial communications documented; 10BaseT Ethernet is tied to the separate T display option |
| Lifecycle | Manufacturing discontinued; GE Vernova identifies 889 and a 489-to-889 retrofit path |
The 489 is a legacy product. GE Vernova identifies the 889 as the alternative and offers a 489-to-889 retrofit kit; compare an exact spare with the engineered retrofit before the outage.
P1 specifies 1 A phase CT secondaries. The installed CT circuits and shorting arrangements must be checked before replacing the relay.
The official selection guide defines HI as 90–300 V DC or 70–265 V AC at 48–62 Hz.
A20 selects the 4–20 mA analog-output range. Receiving-loop scaling and isolation should be checked against the site drawings.
E is the enhanced display with a larger LCD and improved keypad. It is not the T option, which adds 10BaseT Ethernet to the enhanced front panel.
H specifies conformal coating for a harsh chemical environment. The replacement record should retain that suffix.
GE Vernova documents application to small- and medium-sized synchronous or induction generators, including primary, backup and cogeneration duties.
GE Vernova identifies the Multilin 889 and a 489-to-889 retrofit kit. The conversion should be engineered around CTs, wiring, logic, communications and settings.
Send the model, complete part number, quantity, destination and nameplate photo. We will verify identification details before confirming availability and lead time.
Technical information is based on GE Vernova Multilin 489 Official Brochure. Final suitability must be verified against the exact installed unit and official documentation.
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